my area to work with lighting advice
- Thread starter MATTYBOY
- Start date
itsgrowinglikeaweed
Well-Known Member
7X2 by? How tall? How many do you plan on growing? Will you have adequate ventilation. A 400W is good for 4 or 5 Sq ft max. If you can vent it good and want to fill it right up 2 400's would be nice. That way each one would shine down on a 2 X 3.5 ft area.
Its 8ft tall. Id like to grow as many as i can. and yes I have adequate ventilation going straight outside. I know its narrow but its what i got to work with currently. At the moment i have my seedlings and clones from a friend under 1 65 watt 4200 lummens CFL and Two 42 watt 2700 lummens in a diffrent area. but id like a bigger area for them
itsgrowinglikeaweed
Well-Known Member
I have a 2X4 X 5 ft high tent with 3 good size plants in it. They are filling the tent right up. One 400W HPS Is barely enough. I have to switch their position once a week so that they all get their turn in the "sweet spot" of the light "footprint". That should give you some idea....
THANK YOU FOR ALL YOUR HELP. i think i will get two 400W and see how it goes, if im understanding right a 600W wouldnt give me the coverage i need
itsgrowinglikeaweed
Well-Known Member
yeh get the 400. the 600 might be overkill considering your area is only 2 ft wide. 400 is perfect for 2ft wide. If you want to use the whole 7ft you will need 2 400's. but you can start with one while the plants are small, and if everything is going well you can always add another 400. You can also consider a combination of the 400w HPS with some additional CFL lighting. Let your setup grow with your grow so to speak. 
fat sam
Well-Known Member
another option would be a 600 on a light mover but i think the 2-400's would be good also, and also make sure to get the right hood for the light, a rectangle shape hood will give off a rectangle footprint so being the space is long and narrow the hood will be a crucial part of the equation since you dont want to be throwing a lot of light right at the walls